<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="<%= module_dir%>/dashboard">后台</a>
<button class="navbar-toggler collapsed" type="button" data-toggle="collapse" data-target="#navbarColor01" aria-controls="navbarColor01"
  aria-expanded="false" aria-label="Toggle navigation">
  <span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse" id="navbarColor01">
  <ul class="navbar-nav mr-auto">
    <li class="nav-item">
      <a class="nav-link" href="<%= module_dir%>/dashboard">首页
        <span class="sr-only">(current)</span>
      </a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="<%= module_dir%>/categorys">分类</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="<%= module_dir%>/tags">标签</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="<%= module_dir%>/articles">文章</a>
    </li>
  </ul>
</div>
</nav>